NVIDIA GeForce 8400 vs AMD Radeon HD 6770 Green Edition

VS

NVIDIA GeForce 8400

AMD Radeon HD 6770 Green Edition

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 2GB VRAM Radeon HD 6770 Green Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 's Advantages

Lower TDP (25W vs 86W)

AMD Radeon HD 6770 Green Edition 's Advantages

Released 5 years and 4 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (21.34GB/s vs 8.000GB/s)

712 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 6770 Green Edition +4700%

1.008 TFLOPS

GeForce 8400

VS

Radeon HD 6770 Green Edition

Graphics Card

Dec 2007

Release Date

Apr 2013

GeForce 8

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

667 MHz

Memory

256MB

Memory Size

2GB

DDR2

Memory Type

GDDR3

64bit

Memory Bus

128bit

8.000GB/s

Bandwidth

21.34GB/s

Render Config

-

Compute Units

9

1

SM Count

-

8

Shading Units

720

4

TMUs

36

4

ROPs

16

-

L1 Cache

8 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

11.20 GPixel/s

2.160 GTexel/s

Texture Rate

25.20 GTexel/s

-

20.80 GFLOPS

FP32 (float)

1008 GFLOPS

-

Board Design

25W

TDP

86W

200 W

Suggested PSU

250 W

1x DVI 1x VGA 1x S-Video

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

None

Power Connectors

-

Graphics Processor

G98

GPU Name

Juniper

-

GPU Variant

Juniper LE (215-0754009)

Tesla

Architecture

TeraScale 2

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

0.21 billion

Transistors

1.04 billion

86 mm²

Die Size

166 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

5.0

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